620 citations · 1.8k across the 34 of their papers we have counts for
11 papers · 1 filter
Possibility of a Topological Phase Transition in Two-dimensional Model
Tsuyoshi Okubo, Naoki Kawashima
We study by large-scale Monte Carlo simulation the model, which can be regarded as an effective low-energy model of a triangular lattice Heisenberg antiferromagnet. vo…
Bond-weighted Tensor Renormalization Group
Daiki Adachi, Tsuyoshi Okubo, Synge Todo
We propose an improved tensor renormalization group (TRG) algorithm, the bond-weighted TRG (BTRG). In BTRG, we generalize the conventional TRG by introducing bond weights on the ed…
Anisotropic Tensor Renormalization Group
Daiki Adachi, Tsuyoshi Okubo, Synge Todo
We propose a new tensor renormalization group algorithm, Anisotropic Tensor Renormalization Group (ATRG), for lattice models in arbitrary dimensions. The proposed method shares the…
A Scaling Relation for Dangerously Irrelevant Symmetry-Breaking Fields
Tsuyoshi Okubo, Kosei Oshikawa, Hiroshi Watanabe +1
We propose a scaling relation for critical phenomena in which a symmetry-breaking field is dengerously irrelevant. We confirm its validity on the 6-state clock model in three and f…
Snapshot spectrum and critical phenomenon for two-dimensional classical spin systems
Yukinari Imura, Tsuyoshi Okubo, Satoshi Morita +1
We investigate the eigenvalue distribution of the snapshot density matrix (SDM) generated by Monte Carlo simulation for two-dimensional classical spin systems. We find that the dis…
Finite-temperature transition of the distorted kagome-lattice Heisenberg antiferromagnet
Hiroshi Masuda, Tsuyoshi Okubo, Hikaru Kawamura
Motivated by the recent experiment on kagome-lattice antiferromagnets, we study the zero-field ordering behavior of the antiferromagnetic classical Heisenberg model on a uniaxially…